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SICK WL12-3N2431 Retroreflective Photoelectric Sensor, Block Type, 7 m Detection, NPN Output, IP66/IP67/IP69K
Specifications
| Country of Origin | Germany |
|---|---|
| Brand | SICK |
| Response time | 330μs |
| Light Source | LED |
| Detection range | 7 m |
| Model | WL12-3N2431 |
| IP Rating | IP66, IP67, IP69K |
| Housing Material | Metal |
| Output type | NPN |
| Series | W12-3 |
| Maximum Operating Temperature | 60°C |
| Minimum Operating Temperature | -40°C |
| Maximum Current | 100mA |
| DetectIon Type | Retroreflective |
| Terminal type | 4-Pin |
| Interface Type | 4-Pin, M12 Connector |
| Maximum dc Voltage | 30V dc |
| Standards/Approvals | UL File No. NRKH.E181493 & NRKH7.E181493 |
| Sensor Style | Block |
| Loop control | loop measurement |
Key Features
- Reliable retroreflective photoelectric sensing with a 7 m detection range.
- Block style sensor for secure mounting and easy integration.
- Immune to industrial optical interference for stable operation.
- IP66, IP67, and IP69K rated for harsh, high-humidity or washdown environments.
- NPN output suitable for common industrial control logic circuits.
- Die-cast zinc housing for long service life and rugged performance.
- Fast response time of 330 microseconds ideal for automation and packaging lines.
- Wide operating temperature range from -40°C to 60°C.
Product Description
The SICK WL12-3N2431 Retroreflective Photoelectric Sensor provides precise and reliable object detection using advanced LED technology and a retroreflective sensing principle. Designed in a robust block-style housing, this sensor is ideal for harsh automated industrial environments where high ingress protection and stable performance are required.
This model achieves a 7 meter detection range with a focused LED beam, making it suitable for applications including packaging lines, assembly verification, conveyor automation, and presence detection across manufacturing, food and beverage, and material handling industries. The sensor’s output is NPN, allowing seamless interfacing with NPN/negative logic input circuits found in modern industrial PLCs and relays.
The rugged metal housing (die-cast zinc) and high IP66, IP67, and IP69K protection ratings ensure durability in the presence of dust, water jets, or washdown. With a quick 330 microsecond response time, this sensor supports high-speed process and motion control tasks, enabling efficient detection of fast-moving objects.
The WL12-3N2431 features a standard 4-pin, M12 connector interface for wiring simplicity as well as versatile mounting options to fit a wide range of installation scenarios. The wide operating temperature range from -40°C to 60°C, combined with its immunity to optical interference and background suppression, extend its suitability for demanding industrial applications.
Common use cases include type and presence checks for robot applications, collision prevention in automated grippers, loop or sheet edge detection, transparent object monitoring, and packaging automation. The flexible configuration through IO-Link (on supporting versions) and a high-visibility PinPoint LED facilitate fast commissioning and maintenance.
Long 7m retroreflective range for medium-to-large object detection in industrial plants. Metal block style housing withstands impact and corrosive cleaning agents in packaging or food processing plants. Supports rapid electronic switching for integration into high-throughput automated systems.
Ensures safety and operational continuity in challenging environments via triple-rated ingress protection. Explore the full range of advanced sensors with SICK for next-generation industrial automation on EnvMart.
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Frequently Asked Questions
The detection range of this model is 7 meters, making it suitable for medium-to-large object detection in industrial environments.
It features an NPN output, which is compatible with common industrial control logic circuits.
This sensor has IP66, IP67, and IP69K ratings, ensuring protection against dust and high-pressure water jets, suitable for harsh environments.
The response time is 330 microseconds, which supports high-speed process and motion control tasks.
The sensor operates within a temperature range of -40°C to 60°C, allowing it to function in extreme conditions.
The housing is made of die-cast zinc, which provides durability and resistance to impact and corrosive cleaning agents.
It uses a standard 4-pin M12 connector interface for wiring, simplifying the installation process.
It is suitable for applications such as packaging lines, assembly verification, conveyor automation, and presence detection in various industries.
The sensor utilizes an LED as its light source for object detection.
It has UL File No. NRKH.E181493 & NRKH7.E181493, indicating compliance with relevant safety standards.
The maximum current for the WL12-3N2431 is 100 mA, which is important for ensuring proper operation in industrial settings.
Yes, with its high ingress protection ratings, it is designed to operate reliably in high-humidity or washdown environments.
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